Method for predicting radiation attenuation of electrons and protons of spatial solar cell

Abstract

The invention relates to a method for predicting radiation attenuation of electrons and protons of a spatial solar cell and belongs to the technical field of satellite solar cells. A displacement injury method used for predicting comprises the following steps of: (1) determining a relationship between displacement injury and radiation attenuation performance of the electrons and the protons of the solar cell, and testing energy levels of the electrons and the protons; (2) computing the displacement injury of the cell by using non-ionization energy loss to obtain a relationship between the displacement injury and electrical performance attenuation of the cell; (3) computing total displacement injury of the electrons by using a calculus electronic energy spectrum and computing displacement injury of the protons by using a calculus protonic energy spectrum; (4) determining an attenuation ratio of an electrical performance parameter, and multiplying the initial value of the electrical performance parameter by the attenuation ratio to obtain a predicted value of the electrical performance after radiation; and (5) substituting the electrical performance parameter into the a formula to work out relevant data, and then working out the parameter of the cell after the radiation at any working point according to the formula. The method has the advantages that the method is easy to operate, high-efficiency, quick and low in cost, data is accurate, and the like.

Description

technical field [0001] The invention belongs to the technical field of satellite solar cells, in particular to a method for predicting the radiation decay of space solar cells and protons. Background technique [0002] As the main energy source of satellites, space solar cells will experience performance degradation due to the radiation of space protons and electrons during space flight. In order to ensure sufficient power supply during satellite flight in orbit, it is necessary to predict in the design stage of satellite solar cell arrays Irradiation degradation of space solar cells. [0003] At present, the radiation attenuation prediction method adopts the equivalent dose method. This method does not need to be clear about the radiation decay mechanism of the battery, and the principle is simple, but this method requires 9 energy levels and 45 fluences of radiation experiments, which require 270 space solar cells (6 pieces per energy level) and will consume a lot of ener...

AI Technical Summary

Problems solved by technology

Due to the wide range of spatial energy spectrum, the model needs to do 9 typical energy spectrum irradiation experiments in order to ensure the accuracy. Once the battery technology changes, all experiments need to be redone, so this method consumes a lot of manpower, material resources and costs. very high

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